UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

May 12, 2014

Date of Report (Date of Earliest Event Reported)

SOVRAN SELF STORAGE, INC.

(Exact Name of Registrant as Specified in Its Charter)

6467 Main Street

Williamsville, New York 14221

(Address of Principal Executive Offices)

(716) 633-1850

(Registrants’ Telephone Number, Including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrants under any of the following provisions (see General Instruction A.2. below):

Item 1.01. Entry into a Material Definitive Agreement.

On May 12, 2014, Sovran Self Storage, Inc. (the “Company”), Sovran Acquisition Limited Partnership, and Sovran Holdings, Inc. entered into separate Equity Distribution Agreements (the “Equity Distribution Agreements”) with each of Wells Fargo Securities, LLC, Jefferies LLC, SunTrust Robinson Humphrey, Inc., Piper Jaffray & Co., HSBC Securities (USA) Inc., and BB&T Capital Markets, a division of BB&T Securities, LLC (the “Sales Agents”), pursuant to which the Company may sell from time to time, in a continuous equity offering program under its Registration Statement on Form S-3 (File No. 333-195592), up to $225,000,000 in aggregate offering price of shares of the Company’s common stock, par value $0.01 per share (the “Shares”), through the Sales Agents, acting as the Company’s agent and/or principal. Sales of the Shares made pursuant to the Equity Distribution Agreements, if any, may be made in negotiated transactions or transactions that are deemed to be “at the market” offerings, including sales made directly on the New York Stock Exchange or sales made to or through a market maker other than on an exchange. Each Sales Agent will receive from the Company a commission of up to 2% of the gross sales price of all shares sold through it under the applicable Equity Distribution Agreement.

The Company made certain customary representations, warranties and covenants in each of the Equity Distribution Agreements and also agreed to indemnify the Sales Agents against certain liabilities, including liabilities under the Securities Act of 1933, as amended.

On May 12, 2014, the Company, Sovran Acquisition Limited Partnership, and Sovran Holdings, Inc. also gave notice of termination of existing equity distribution agreements dated February 27, 2013 with each of Wells Fargo Securities, LLC, Jefferies LLC and SunTrust Robinson Humphrey, Inc.

This Current Report on Form 8-K shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration of qualification under the securities laws of any such state. The Equity Distribution Agreements are filed as Exhibit 1.1, Exhibit 1.2, Exhibit 1.3, Exhibit 1.4, Exhibit 1.5 and Exhibit 1.6 to this Current Report on Form 8-K and the description of the material terms of the Equity Distribution Agreements in this Item 1.01 are qualified in their entirety by reference to such Exhibits, which are incorporated herein by reference.

Item 1.02. Termination of a Material Definitive Agreement.

On May 12, 2014, the Company, Sovran Acquisition Limited Partnership, and Sovran Holdings, Inc. gave notice of termination of existing equity distribution agreements dated February 27, 2013 with each of Wells Fargo Securities, LLC, Jefferies LLC and SunTrust Robinson Humphrey, Inc. $38.8 million remained available for issuance by the Company under such equity distribution agreements. Such agreements were terminated in connection with the entry of new equity distribution agreements with each of Wells Fargo Securities, LLC, Jefferies LLC, SunTrust Robinson Humphrey, Inc., Piper Jaffray & Co., HSBC Securities (USA) Inc., and BB&T Capital Markets, a division of BB&T Securities, LLC.

Item 9.01. Financial Statements and Exhibits.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.

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INDEX TO EXHIBITS

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